[INFO] cloning repository https://github.com/coatsd/rust_espresso_maker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/coatsd/rust_espresso_maker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoatsd%2Frust_espresso_maker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoatsd%2Frust_espresso_maker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5df27d98246c66e1e7cf2cf44ccad04b910af17c
[INFO] testing coatsd/rust_espresso_maker against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoatsd%2Frust_espresso_maker" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/coatsd/rust_espresso_maker on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/coatsd/rust_espresso_maker
[INFO] finished tweaking git repo https://github.com/coatsd/rust_espresso_maker
[INFO] tweaked toml for git repo https://github.com/coatsd/rust_espresso_maker written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/coatsd/rust_espresso_maker already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a28abe7eac8c23602b037436aeac3b5d0a769f69514dcf1c20ca108e555f02e9
[INFO] running `Command { std: "docker" "start" "-a" "a28abe7eac8c23602b037436aeac3b5d0a769f69514dcf1c20ca108e555f02e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a28abe7eac8c23602b037436aeac3b5d0a769f69514dcf1c20ca108e555f02e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a28abe7eac8c23602b037436aeac3b5d0a769f69514dcf1c20ca108e555f02e9", kill_on_drop: false }`
[INFO] [stdout] a28abe7eac8c23602b037436aeac3b5d0a769f69514dcf1c20ca108e555f02e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 983230897a8869ae6821441a5f8d84adb6f58f6f51abd3ad050b623ac0968f55
[INFO] running `Command { std: "docker" "start" "-a" "983230897a8869ae6821441a5f8d84adb6f58f6f51abd3ad050b623ac0968f55", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling espresso_maker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `thread`, `time`
[INFO] [stdout]  --> src/message_based.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{time, thread};
[INFO] [stdout]   |           ^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `S`
[INFO] [stdout]  --> src/message_based.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | type S<T> = mpsc::Sender<T>;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `R`
[INFO] [stdout]   --> src/message_based.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | type R<T> = mpsc::Receiver<T>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/message_based.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn new(s: Size) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_ingredient`
[INFO] [stdout]   --> src/message_based.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn add_ingredient(mut self, i: Ingredient) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run_checks`
[INFO] [stdout]   --> src/message_based.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn run_checks(t_o: u64, s: Size) -> [Result<(), &'static str>; 5] {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `message_based_main`
[INFO] [stdout]   --> src/message_based.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub fn message_based_main() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CAPACITY`
[INFO] [stdout]   --> src/machine_components.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const CAPACITY: f32 = 64.0;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `S`
[INFO] [stdout]   --> src/machine_components.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | type S<T> = mpsc::Sender<T>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `R`
[INFO] [stdout]   --> src/machine_components.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | type R<T> = mpsc::Receiver<T>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Espresso`
[INFO] [stdout]   --> src/machine_components.rs:18:2
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Espresso,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Milk`
[INFO] [stdout]   --> src/machine_components.rs:19:2
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Milk,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Small`
[INFO] [stdout]   --> src/machine_components.rs:33:2
[INFO] [stdout]    |
[INFO] [stdout] 33 |     Small,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Size` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/machine_components.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 | #[derive(Copy, Clone)]
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Medium`
[INFO] [stdout]   --> src/machine_components.rs:34:2
[INFO] [stdout]    |
[INFO] [stdout] 34 |     Medium,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Size` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/machine_components.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 | #[derive(Copy, Clone)]
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Large`
[INFO] [stdout]   --> src/machine_components.rs:35:2
[INFO] [stdout]    |
[INFO] [stdout] 35 |     Large,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Size` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/machine_components.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 | #[derive(Copy, Clone)]
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `grind_beans`
[INFO] [stdout]   --> src/machine_components.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub fn grind_beans(s: Size, timeout: u64) -> Result<(), &'static str> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dispense`
[INFO] [stdout]    --> src/machine_components.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 122 |     pub fn dispense(s: Size, timeout: u64) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `press`
[INFO] [stdout]    --> src/machine_components.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |     pub fn press(timeout: u64) -> Result<Ingredient, &'static str> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dispense`
[INFO] [stdout]    --> src/machine_components.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |     pub fn dispense(s: Size, timeout: u64) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `froth`
[INFO] [stdout]    --> src/machine_components.rs:207:9
[INFO] [stdout]     |
[INFO] [stdout] 207 |     pub fn froth(timeout: u64) -> Result<Ingredient, &'static str> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `thread`, `time`
[INFO] [stdout]  --> src/message_based.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{time, thread};
[INFO] [stdout]   |           ^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `S`
[INFO] [stdout]  --> src/message_based.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | type S<T> = mpsc::Sender<T>;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `R`
[INFO] [stdout]   --> src/message_based.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | type R<T> = mpsc::Receiver<T>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_ingredient`
[INFO] [stdout]   --> src/message_based.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn add_ingredient(mut self, i: Ingredient) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CAPACITY`
[INFO] [stdout]   --> src/machine_components.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const CAPACITY: f32 = 64.0;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `S`
[INFO] [stdout]   --> src/machine_components.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | type S<T> = mpsc::Sender<T>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `R`
[INFO] [stdout]   --> src/machine_components.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | type R<T> = mpsc::Receiver<T>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Espresso`
[INFO] [stdout]   --> src/machine_components.rs:18:2
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Espresso,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Milk`
[INFO] [stdout]   --> src/machine_components.rs:19:2
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Milk,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Small`
[INFO] [stdout]   --> src/machine_components.rs:33:2
[INFO] [stdout]    |
[INFO] [stdout] 33 |     Small,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Size` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/machine_components.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 | #[derive(Copy, Clone)]
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Large`
[INFO] [stdout]   --> src/machine_components.rs:35:2
[INFO] [stdout]    |
[INFO] [stdout] 35 |     Large,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Size` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/machine_components.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 | #[derive(Copy, Clone)]
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `grind_beans`
[INFO] [stdout]   --> src/machine_components.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub fn grind_beans(s: Size, timeout: u64) -> Result<(), &'static str> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dispense`
[INFO] [stdout]    --> src/machine_components.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 122 |     pub fn dispense(s: Size, timeout: u64) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `press`
[INFO] [stdout]    --> src/machine_components.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |     pub fn press(timeout: u64) -> Result<Ingredient, &'static str> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dispense`
[INFO] [stdout]    --> src/machine_components.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |     pub fn dispense(s: Size, timeout: u64) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `froth`
[INFO] [stdout]    --> src/machine_components.rs:207:9
[INFO] [stdout]     |
[INFO] [stdout] 207 |     pub fn froth(timeout: u64) -> Result<Ingredient, &'static str> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.41s
[INFO] running `Command { std: "docker" "inspect" "983230897a8869ae6821441a5f8d84adb6f58f6f51abd3ad050b623ac0968f55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "983230897a8869ae6821441a5f8d84adb6f58f6f51abd3ad050b623ac0968f55", kill_on_drop: false }`
[INFO] [stdout] 983230897a8869ae6821441a5f8d84adb6f58f6f51abd3ad050b623ac0968f55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 71cac9ee46648ad3d6389234f060178e163ebc22480077f438a59bf241c74ffe
[INFO] running `Command { std: "docker" "start" "-a" "71cac9ee46648ad3d6389234f060178e163ebc22480077f438a59bf241c74ffe", kill_on_drop: false }`
[INFO] [stdout] warning: unused imports: `thread`, `time`
[INFO] [stdout]  --> src/message_based.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{time, thread};
[INFO] [stdout]   |           ^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `S`
[INFO] [stdout]  --> src/message_based.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | type S<T> = mpsc::Sender<T>;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `R`
[INFO] [stdout]   --> src/message_based.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | type R<T> = mpsc::Receiver<T>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/message_based.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn new(s: Size) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_ingredient`
[INFO] [stdout]   --> src/message_based.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn add_ingredient(mut self, i: Ingredient) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run_checks`
[INFO] [stdout]   --> src/message_based.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn run_checks(t_o: u64, s: Size) -> [Result<(), &'static str>; 5] {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `message_based_main`
[INFO] [stdout]   --> src/message_based.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub fn message_based_main() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CAPACITY`
[INFO] [stdout]   --> src/machine_components.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const CAPACITY: f32 = 64.0;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `S`
[INFO] [stdout]   --> src/machine_components.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | type S<T> = mpsc::Sender<T>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `R`
[INFO] [stdout]   --> src/machine_components.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | type R<T> = mpsc::Receiver<T>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Espresso`
[INFO] [stdout]   --> src/machine_components.rs:18:2
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Espresso,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Milk`
[INFO] [stdout]   --> src/machine_components.rs:19:2
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Milk,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Small`
[INFO] [stdout]   --> src/machine_components.rs:33:2
[INFO] [stdout]    |
[INFO] [stdout] 33 |     Small,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Size` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/machine_components.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 | #[derive(Copy, Clone)]
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Medium`
[INFO] [stdout]   --> src/machine_components.rs:34:2
[INFO] [stdout]    |
[INFO] [stdout] 34 |     Medium,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Size` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/machine_components.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 | #[derive(Copy, Clone)]
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Large`
[INFO] [stdout]   --> src/machine_components.rs:35:2
[INFO] [stdout]    |
[INFO] [stdout] 35 |     Large,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Size` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/machine_components.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 | #[derive(Copy, Clone)]
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling espresso_maker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `grind_beans`
[INFO] [stdout]   --> src/machine_components.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub fn grind_beans(s: Size, timeout: u64) -> Result<(), &'static str> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dispense`
[INFO] [stdout]    --> src/machine_components.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 122 |     pub fn dispense(s: Size, timeout: u64) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `press`
[INFO] [stdout]    --> src/machine_components.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |     pub fn press(timeout: u64) -> Result<Ingredient, &'static str> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dispense`
[INFO] [stdout]    --> src/machine_components.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |     pub fn dispense(s: Size, timeout: u64) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `froth`
[INFO] [stdout]    --> src/machine_components.rs:207:9
[INFO] [stdout]     |
[INFO] [stdout] 207 |     pub fn froth(timeout: u64) -> Result<Ingredient, &'static str> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `thread`, `time`
[INFO] [stdout]  --> src/message_based.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{time, thread};
[INFO] [stdout]   |           ^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `thread`, `time`
[INFO] [stdout]  --> src/message_based.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{time, thread};
[INFO] [stdout]   |           ^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `S`
[INFO] [stdout]  --> src/message_based.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | type S<T> = mpsc::Sender<T>;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `R`
[INFO] [stdout]   --> src/message_based.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | type R<T> = mpsc::Receiver<T>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_ingredient`
[INFO] [stdout]   --> src/message_based.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn add_ingredient(mut self, i: Ingredient) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CAPACITY`
[INFO] [stdout]   --> src/machine_components.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const CAPACITY: f32 = 64.0;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `S`
[INFO] [stdout]   --> src/machine_components.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | type S<T> = mpsc::Sender<T>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `R`
[INFO] [stdout]   --> src/machine_components.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | type R<T> = mpsc::Receiver<T>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Espresso`
[INFO] [stdout]   --> src/machine_components.rs:18:2
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Espresso,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Milk`
[INFO] [stdout]   --> src/machine_components.rs:19:2
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Milk,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Small`
[INFO] [stdout]   --> src/machine_components.rs:33:2
[INFO] [stdout]    |
[INFO] [stdout] 33 |     Small,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Size` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/machine_components.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 | #[derive(Copy, Clone)]
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Large`
[INFO] [stdout]   --> src/machine_components.rs:35:2
[INFO] [stdout]    |
[INFO] [stdout] 35 |     Large,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Size` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/machine_components.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 | #[derive(Copy, Clone)]
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `grind_beans`
[INFO] [stdout]   --> src/machine_components.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub fn grind_beans(s: Size, timeout: u64) -> Result<(), &'static str> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dispense`
[INFO] [stdout]    --> src/machine_components.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 122 |     pub fn dispense(s: Size, timeout: u64) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `press`
[INFO] [stdout]    --> src/machine_components.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |     pub fn press(timeout: u64) -> Result<Ingredient, &'static str> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dispense`
[INFO] [stdout]    --> src/machine_components.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |     pub fn dispense(s: Size, timeout: u64) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `froth`
[INFO] [stdout]    --> src/machine_components.rs:207:9
[INFO] [stdout]     |
[INFO] [stdout] 207 |     pub fn froth(timeout: u64) -> Result<Ingredient, &'static str> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `S`
[INFO] [stdout]  --> src/message_based.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | type S<T> = mpsc::Sender<T>;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `R`
[INFO] [stdout]   --> src/message_based.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | type R<T> = mpsc::Receiver<T>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/message_based.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn new(s: Size) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_ingredient`
[INFO] [stdout]   --> src/message_based.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn add_ingredient(mut self, i: Ingredient) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run_checks`
[INFO] [stdout]   --> src/message_based.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn run_checks(t_o: u64, s: Size) -> [Result<(), &'static str>; 5] {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `message_based_main`
[INFO] [stdout]   --> src/message_based.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub fn message_based_main() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CAPACITY`
[INFO] [stdout]   --> src/machine_components.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const CAPACITY: f32 = 64.0;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `S`
[INFO] [stdout]   --> src/machine_components.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | type S<T> = mpsc::Sender<T>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `R`
[INFO] [stdout]   --> src/machine_components.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | type R<T> = mpsc::Receiver<T>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Espresso`
[INFO] [stdout]   --> src/machine_components.rs:18:2
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Espresso,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Milk`
[INFO] [stdout]   --> src/machine_components.rs:19:2
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Milk,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Small`
[INFO] [stdout]   --> src/machine_components.rs:33:2
[INFO] [stdout]    |
[INFO] [stdout] 33 |     Small,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Size` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/machine_components.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 | #[derive(Copy, Clone)]
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Medium`
[INFO] [stdout]   --> src/machine_components.rs:34:2
[INFO] [stdout]    |
[INFO] [stdout] 34 |     Medium,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Size` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/machine_components.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 | #[derive(Copy, Clone)]
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Large`
[INFO] [stdout]   --> src/machine_components.rs:35:2
[INFO] [stdout]    |
[INFO] [stdout] 35 |     Large,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Size` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/machine_components.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 | #[derive(Copy, Clone)]
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `grind_beans`
[INFO] [stdout]   --> src/machine_components.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub fn grind_beans(s: Size, timeout: u64) -> Result<(), &'static str> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dispense`
[INFO] [stdout]    --> src/machine_components.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 122 |     pub fn dispense(s: Size, timeout: u64) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `press`
[INFO] [stdout]    --> src/machine_components.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |     pub fn press(timeout: u64) -> Result<Ingredient, &'static str> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dispense`
[INFO] [stdout]    --> src/machine_components.rs:183:9
[INFO] [stdout]     |
[INFO] [stdout] 183 |     pub fn dispense(s: Size, timeout: u64) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `froth`
[INFO] [stdout]    --> src/machine_components.rs:207:9
[INFO] [stdout]     |
[INFO] [stdout] 207 |     pub fn froth(timeout: u64) -> Result<Ingredient, &'static str> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.31s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/espresso_maker-d620be8651131cdf)
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/espresso_maker-df7667e29c9b06cc)
[INFO] running `Command { std: "docker" "inspect" "71cac9ee46648ad3d6389234f060178e163ebc22480077f438a59bf241c74ffe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71cac9ee46648ad3d6389234f060178e163ebc22480077f438a59bf241c74ffe", kill_on_drop: false }`
[INFO] [stdout] 71cac9ee46648ad3d6389234f060178e163ebc22480077f438a59bf241c74ffe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 00598ef16e7477e878a5ea42e8ebacd2e48aee4c762ef455560505668adacf47
[INFO] running `Command { std: "docker" "start" "-a" "00598ef16e7477e878a5ea42e8ebacd2e48aee4c762ef455560505668adacf47", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused imports: `thread`, `time`
[INFO] [stderr]  --> src/message_based.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{time, thread};
[INFO] [stderr]   |           ^^^^  ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `S`
[INFO] [stderr]  --> src/message_based.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | type S<T> = mpsc::Sender<T>;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `R`
[INFO] [stderr]   --> src/message_based.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | type R<T> = mpsc::Receiver<T>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/message_based.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     fn new(s: Size) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `add_ingredient`
[INFO] [stderr]   --> src/message_based.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn add_ingredient(mut self, i: Ingredient) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `run_checks`
[INFO] [stderr]   --> src/message_based.rs:72:4
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn run_checks(t_o: u64, s: Size) -> [Result<(), &'static str>; 5] {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `message_based_main`
[INFO] [stderr]   --> src/message_based.rs:82:8
[INFO] [stderr]    |
[INFO] [stderr] 82 | pub fn message_based_main() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `CAPACITY`
[INFO] [stderr]   --> src/machine_components.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | const CAPACITY: f32 = 64.0;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `S`
[INFO] [stderr]   --> src/machine_components.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | type S<T> = mpsc::Sender<T>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `R`
[INFO] [stderr]   --> src/machine_components.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | type R<T> = mpsc::Receiver<T>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Espresso`
[INFO] [stderr]   --> src/machine_components.rs:18:2
[INFO] [stderr]    |
[INFO] [stderr] 18 |     Espresso,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Milk`
[INFO] [stderr]   --> src/machine_components.rs:19:2
[INFO] [stderr]    |
[INFO] [stderr] 19 |     Milk,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Small`
[INFO] [stderr]   --> src/machine_components.rs:33:2
[INFO] [stderr]    |
[INFO] [stderr] 33 |     Small,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `Size` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/machine_components.rs:31:16
[INFO] [stderr]    |
[INFO] [stderr] 31 | #[derive(Copy, Clone)]
[INFO] [stderr]    |                ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Medium`
[INFO] [stderr]   --> src/machine_components.rs:34:2
[INFO] [stderr]    |
[INFO] [stderr] 34 |     Medium,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `Size` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/machine_components.rs:31:16
[INFO] [stderr]    |
[INFO] [stderr] 31 | #[derive(Copy, Clone)]
[INFO] [stderr]    |                ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Large`
[INFO] [stderr]   --> src/machine_components.rs:35:2
[INFO] [stderr]    |
[INFO] [stderr] 35 |     Large,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `Size` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/machine_components.rs:31:16
[INFO] [stderr]    |
[INFO] [stderr] 31 | #[derive(Copy, Clone)]
[INFO] [stderr]    |                ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `grind_beans`
[INFO] [stderr]   --> src/machine_components.rs:83:9
[INFO] [stderr]    |
[INFO] [stderr] 83 |     pub fn grind_beans(s: Size, timeout: u64) -> Result<(), &'static str> {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `dispense`
[INFO] [stderr]    --> src/machine_components.rs:122:9
[INFO] [stderr]     |
[INFO] [stderr] 122 |     pub fn dispense(s: Size, timeout: u64) -> Result<(), &'static str> {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `press`
[INFO] [stderr]    --> src/machine_components.rs:146:9
[INFO] [stderr]     |
[INFO] [stderr] 146 |     pub fn press(timeout: u64) -> Result<Ingredient, &'static str> {
[INFO] [stderr]     |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `dispense`
[INFO] [stderr]    --> src/machine_components.rs:183:9
[INFO] [stderr]     |
[INFO] [stderr] 183 |     pub fn dispense(s: Size, timeout: u64) -> Result<(), &'static str> {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `froth`
[INFO] [stderr]    --> src/machine_components.rs:207:9
[INFO] [stderr]     |
[INFO] [stderr] 207 |     pub fn froth(timeout: u64) -> Result<Ingredient, &'static str> {
[INFO] [stderr]     |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `espresso_maker` (lib) generated 20 warnings
[INFO] [stderr] warning: `espresso_maker` (lib test) generated 20 warnings (20 duplicates)
[INFO] [stderr] warning: `espresso_maker` (bin "espresso_maker" test) generated 16 warnings (16 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 15.31s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/espresso_maker-d620be8651131cdf)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/espresso_maker-df7667e29c9b06cc)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests espresso_maker
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "00598ef16e7477e878a5ea42e8ebacd2e48aee4c762ef455560505668adacf47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00598ef16e7477e878a5ea42e8ebacd2e48aee4c762ef455560505668adacf47", kill_on_drop: false }`
[INFO] [stdout] 00598ef16e7477e878a5ea42e8ebacd2e48aee4c762ef455560505668adacf47